# UL 2683 — Which OSHA-recognized labs (NRTLs) can certify to a given test standard For UL 2683, standard title is Electric Heating Systems for Floor and Ceiling Installation; status is listed as appropriate, recorded from its source on 2026-09-08; source re-checked 2026-09-17. - **Test standard:** UL 2683 _(verified: appears in the quote below)_ - **Standard title:** Electric Heating Systems for Floor and Ceiling Installation _(verified: appears in the quote below)_ - **Status:** listed as appropriate _(our reading, not quoted from the source)_ ## What the source says > UL 2683 | Electric Heating Systems for Floor and Ceiling Installation | ## Source - https://www.osha.gov/nationally-recognized-testing-laboratory-program/list-standards Last verified: 2026-09-17. Review by: 2026-12-07. Part of [Which OSHA-recognized labs (NRTLs) can certify to a given test standard](https://referencesource.org/nrtl-recognized-test-standards/).